<template>
  <div>
        <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

<!-- 卡片区域 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1===0?'bdtop':'','vconter']" v-for="(item1,i1) in scope.row.children" :key='item1.id'>
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag closable @close='removeRightById(scope.row,item1.id)'>{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级三级权限 -->
              <el-col :span="19">
                <el-row  :class="[i2===0?'':'bdtop','vconter']" v-for="(item2,i2) in item1.children" :key='item2.id'>
                  <el-col :span="6">
                    <el-tag type="success" closable @close='removeRightById(scope.row,item2.id)'>{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag closable @close='removeRightById(scope.row,item3.id)' type="warning" v-for="(item3) in item2.children" :key="item3.id">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>            
          </template>
        </el-table-column>                
      </el-table>
    </el-card>

    <!-- 分配权限对话框 -->
    <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close='setRightDialogClosed'>
<el-tree :data="rightslist" :props="treeProps" show-checkbox
 node-key='id'
  default-expand-all :default-checked-keys='defkeys' ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights()">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist:[],
      // 控制分配权限对话框
      setRightDialogVisible:false,
      // 所有权限的数据
      rightslist:[],
      // 树形控件
      treeProps:{
        label:'authName',
        children:'children'
      },
      // 默认选中的节点
      defkeys:[],
      roleId:''
    }
  },
  created(){
    this.getRolesList()
  },
  methods: {
    async getRolesList(){
      const {data:res} =await this.$http.get('roles')
      if(res.meta.status !==200){
        return yhis.$message.error('获取角色列表数据失败')
      }
        this.rolelist=res.data
        console.log(this.rolelist);
    },
    // 根据id删除对应的权限
    async removeRightById(role,rightId){
      // 弹框提示用户是否删除
       const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err =>err)
        if(confirmResult !=='confirm'){
          return this.$message.info('取消了删除')
        }
        const {data:res} =await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status !==200){
          return this.$message.error('删除权限失败')
        }
        role.children=res.data
    },

    // 分配权限
    async showSetRightDialog(role){
      this.roleId=role.id
      // 获取所有权限数据
      const {data:res}= await this.$http.get(`rights/tree`)
        if(res.meta.status !==200){
          return this.$message.error('获取权限数据失败')
        } 
        this.rightslist=res.data 
        this.getLeafKeys(role,this.defkeys)    
      this.setRightDialogVisible=true
    },

    // 获取三级权限id
    getLeafKeys(node,arr){
      if(!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item=> this.getLeafKeys(item,arr))
    },
    setRightDialogClosed(){
      this.defkeys=[]
    },
    async allotRights(){
      const keys=[...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()]
      const idStr=keys.join(',')
      const {data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
        if(res.meta.status !==200){
          return this.$message.error('分配权限失败')
        }    
        this.$message.success('分配权限成功')   
        this.getRolesList()
        this.setRightDialogVisible=false
    }
  },
}
</script>

<style lang='less' scoped>
  .el-tag{
    margin: 7px;
  }
  .bdtop{
    border-top:1px solid #eee;
  }
  .bdbottom{
    border-bottom:1px solid #eee;
  }
  .vconter{
    display: flex;
    align-items: center;
  }
</style>